{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xb70d8eeadb2189746b98440000608e50a85b55e2ced6ec1ef0b68cf743cee764",
    "signature": "0x3e62545b64c14a21cde043f08a723a1a73fcc4ea04174a9c5cb667831ae05ca76df87508ec9183c44d86a34d5354e9c5b499345824ab91037eb680b3463df2cc1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}